Means for feeding pargeting machines with thick pargeting material



y 8, 956 P. M. J. MR. DAIGNAS 2,744,787

MEANS FOR FEEDING PARGETING MACHINES WITH THICK PARGETING MATERIAL 2 Sheets-Sheet 1 Filed June 16, 1953 May 8, 1956 -P.- J. M. R. DAIGNAS 2,744,787

MEANS FOR FEEDING PARGETING MACHINES WITH THICK PARGETING MATERIAL Filed June 16, 1953 2 Sheets-Sheet 2 as pargeting material receptacle.

United States Patent O MEANS FOR FEEDING PARGETING MACHINES When it is desired to project coating material, such as a mortar including sand with a view to producing a mottled effect, it is generally necessary to resort to pargeting machines including a casing into which pargeting material is fed and inside which revolves a throwing rotor provided with flexible radial blades the free ends of which, during the rotation of said rotor are successively in scraping engagement with an abutment which curves them before they pass in register with an exhaust opening,

whereby said blades, which have during their travel picked up in the casing a certain amount of pargeting material, are suddenly released by escaping from the abutment and project energetically the material carried by them through the exhaust opening.

pargeting machines for projecting thick paints with a view to produce a mottled relief effect. But such heavy paints,

such as those having as a base plastic material, are generally fibrous because they include asbestos or cellulosic fibres and, by reason of the compact structure of these paints, the blade-carrying rotor is speedily crammed if it is loaded under normal conditions with such thick material.

My improved method for feeding projecting machines of the above type allows removing the above drawbacks and, according to said method, the throwing rotor is separated from the provision of material to be projected and the amount of material picked up by the successive blades on the rotor is dosed so as to correspond to the desired value.

My invention has furthermore for its object an arrangement for the execution of the above method. Said arrangement includes a compartment that is separated from the area swept over by the rotor blades by means of a grid-shaped partition substantially tangent to the path followed by the ends of the projecting blades while a movable member is associated with said separate compartment with a view to urging through the grid, as requested by the operator, a fraction of the thick pargeting material introduced into said compartment which acts The separate compartment may be constituted by an auxiliary container removably fitted inside the actual casing of the pargeting machine or it may be defined in said casing by a mere perforated partition, such as said grid-shaped partition, fixed in said casing so as to define a space that is not swept over by the projecting means and that is adapted to receive the load of pargeting material to be projected.

According to an advantageous embodiment of my invention, the movable member which is intended to provide for the dosing of the pargeting material through the as they are claimed in accompanying claims.

.grid towards the blades of the throwing rotor, is con-s 2,744,787 Patented May 8, 1956 "ice stituted by a movable flap revolubly carried by a spindle parallel to the axis of rotation of said rotor, said flap being controlled by a rod pivotally secured thereto and the free end of which is preferably actuated by the thumb of the operators hand which carries the pargetingimachine through its gripping means. The meshes of the grid are sufiiciently close so that the passage of the thick pargeting material contained in the compartment under the sole action of gravity is avoided. The throwing rotor can therefore be fed only when, the operator exerts a semi-liquid material but also very thick material while the machine may be fully loaded whatever may bethe viscosity of the pargeting material. 7 w

' Preferably the pargeting machine is of 'thetype 'described in my French Patent No. 781,052,, filed on January 27, 1934, or in the first certificateof addition No. 47,767, therefor filed on February 28, 1936; said machine may include the improvements described inmy French Patent No. 851,673, filed on September 2611938, and in my French Patent No. 1,053,444, filed on 4,1952 I I,

The followingdescription and accompanying corresponding drawings are given by way of a m' ere ex'emplification and by no means in a binding sense"sd as to allow ascertaining the manner of executing my'invent ion the features disclosed forming part of my invention insofar To make the disclosure easier, the means for feeding semi-liquids or very thick material to the machine rotor will be termed hereinafter the pusher. In accompanying drawings:

Fig. l is a side view, partly torn off, of a pargeting machine including a container for pargeting: material to be projected and provided with a pusher in accordance with my invention.

Fig. 2 is an outer front sectional view of the machine illustrated in Fig. 1, as seen from the side provided with the exhaust opening, certain parts beingshown as't orn Fig. 3 is a perspective view of the pusher, shown separate, provided on the machine illustrated in Fig.1;

Fig. 4 is a perspective view of a modified pusher.

Fig. 5 is an outer side view on a smaller scale of'a pargeting machine provided laterally with an' auxiliary container for aprovision of pargeting material to be projected, said machine incorporating a pusher.

Turning to Figs. 1 and 2, the machine illustrated includes a casing 1 having an upper wall 2, arear cylindrical wall'3, a bottom wall 4 extending forwardly up 'to'a'n ex-p haust opening 5 and two side-walls 6 and 7, said casingre- .ceiving the pargeting material to be projected. Inside said casing is revolubly mounted a throwing rotor constituted by a drum 8 carrying projecting blades 9 associated with a cross bar 10 forming an abutment. Said blades 9 are arranged in the'manner disclosed in; my above-mentioned French Patent No. 1,053,444; the drum 8 is rigid with aspindle 11 revolubly carried in bearings 12 secured to the side-walls 6 and 7 of the casing. A driving crank 13 is keyed to said spindle (Fig. 1). The ends of the throwing blades 9 are tensioned by an abutment constituted by a plate 14 secured to a shaft 15 parallel with the rotor spindle 11 and carrying outside the casing a radial arm 16, the end 17 of which is adapted to engage the tee'th'of fa quadrant 18 secured to the side-wall 7. Thisfarr'angement allows a speedy and accurate control "of thepositio'n of the abutment plate 14. An arm 19'loosely mounted on shaft 15 is provided with a suitably shaped-cut flexible q .a tongue 20 thatis folded so as to project from the arm 19 endrs a'lso adaptedto engage the teeth of "quadrant 18, said tongue acting as a terminal abutment for the movements of the-arm 16. c Inside the casing 1:is"ho-used a pusher constituted by a ismall'vat 21 the rear wall of which is open, said pusher f'be'ing; provided with a front hooleshaped edge '22 which 'eng'agestheincurved-front edge 23 of the bottom wall of .said casing "1, said edge '23 defining the'lower end of the exhaust opening '5;'the rear edge of the vat '21 forms a Tsupporting'me'mber'24 resting on the bottom 4 of the eas- Th'evafZl-is closed at'its rear end by a grid 25 the meshes of which are rather close, said gridbeing carried by a "frame 26 having two lateral rabbets 27 which are adapted to slide over the 'inturned edges 28 serum side walls of the vat '21 (Big. T 3) so as to allow an easy removal of the grid either for inserting a grid having "a difierents ize ofrnesh or else in order'to cleanthe said a .grid. 'A transverse-spindle 29 is secured betweentheside Ywalls-df the vat"2'1 and to said spindle is rockablysecured 'a'flap 30 extending across the vat 21 vandcontrolled by arod 31,pivotally secured to 'a carriermember'32.rigid with the "flap surface. Said rod 31 passes through an opening 33 ,(Fig. 1) provided inthe upper Wa1l.2 of the machine casing and'its upper endi34lis threaded asvshown inFigJ'Z soas-to receive the tapped control knob 35.

.When his desired to project -semi-liquids-'0r.highly viscous material, the -pusher isfitted in the pargetingmachine, asp'rovided'by' inserting the rod '31 into the port :33after unscrewing theknob 35.and byfitting.the vat 21 inside ,the frofit-sectiono'f the-casing. .After raising the Lfiap 30, the operator loads the vat 21 with .thepargeting-material tobepprojected. Whilehe is holding themachine fthroughthe handle 'iifi. (Fig. 1), he may-depress the flap v30 through action onthe knob 35 so as to adjusttheamount of material discharged'through the grid 25 the-position of which issubstantiallytangent to the path followed by the ends of the blades 9 on the rotor- 8.

TheTemoval of the pusher is performed througha mere raisingmovement-without any tool being required and it is suflicientto-thisend-to; remove the control knob 3:5 carried lay-therod 31 before raising the-pusher outof the casingl.

The arrangement illustrated in Fig. 4 maybeusedrinstead of the pusher shown-as fitted inside the-machine of Figsvlgandl. This -arrangement includes a, grid 25a the iframe 2 6a-of which may slide between I two folded. metal sheets 37 carried by the carrier 38 constituted by a bent wire. Said carrier is vprovided with two-eyes 39-inside which: is mounted-asleeve 40 extending over. the upper edge of thezigi'id and adaptedto carry a spindle 41 Tone end of -wh-ich=extends at right anglesto 2 its main section as shown ;at 42- while its other end is threaded and-carries a wing nut43. Tothe sleeve -40.is hingedly secured byzmeans of two hingeknuckles 44 aflflap 30a rigid with :a carrier .member-za to which islpivotally securedr-a control 'rod :31'0. T-he wire-carrier' 38 includes twoie'xtensions- 451-pro- -jecting beyondthe eyes 39 and the ends of which 46 are boom-shaped. For the mounting '?of this arrangement, the:sidewal:ls*6=and -7 of the machine illustratediinitF-igs. 1 and 2 are cut .outraso as to form -the openingsrequired 'for miepassage of theispindle 41-over'which is fitted the sleeve m proviued with 'its flap 30a, said spindle being held in 'pos'ittomby a"tighteni-ng ef'the 'nut'43- over it. "-Two furtiter openings areproVidedin the fianges- 6 and '7 for en- 'gagemenfby'the 'ho'ok-shapedends "46 of the'carrier 38 so as to-form arigid unit 'withthe machine casing by reason "(if "the hooking engagement thus obtained.

lhe machfineioperates in'the same manner as that desc ribd with rference'tdFigs/l/Z and'3, the materialcontaining vat being constitutedby the sectionof the casing comprise d between ttheggrid .2511 which engages -the vcasing bottomwi the frontraised end of said. bottom sec- "-tion and theside-walls 6 and 7.

The pusherrnay be located as-shownin the modification "is'coaxialwiththe projectingrotor.

of Fig. 5 in adjacent relationship with the casing that This'isthe'case'ofthe pargeting machine 47 illustrated diagrammatically in Fig 5. The vat 21b is then housed outside the actual machine and is secured by means of a hook 48 engaging the inside of the machine so that said vat registers with an opening formed in the outer cylindricalwall of the machine 47. The 'vat 21b :is a on the other hand carried by r-a spindle passing through the fittingsw'carried'on theoutside of the machine 47 and to which may be secureda rod carrying a secti'onofthe wall '50'revolubly carried 'r'oundthe' spindle 51 of themachine. :Thus, whenithe;pusher isinot. in use, the wall section 50 closes the opening in the machine 47, which registers with 'the'vat 21b. 'TheTemainder'o'f the arrangement is similar to that disclosed with reference to Figs. 3 and 4, the spindle 31b controlling the location of the flap 30b with reference to the grid 25b.

Obviously, without unduly Widening .thescope of rthe invention as defined in accompanying .claims, numerous tmodifications may be brought to the arrangements tdisclosed.

What'I .claim is: V 1. In a pargeting machine utilizing semi-liquid and viscous'pargeting material and of the typecomprising a casingprovidedwith gripping means and into which pargeting material is stored and witha throwing rotor formed -Witl1'fl6Xibl61blad6S which, during the rotation of .said

rotorare'in scraping engagementby their. free .ends with an abutment which :curves them, the releasing of .the flexible blades when they escape fromsaid vabutment causing a projection of the pargeting .material picked -up byithe .ends of said flexible blades; the improvement which comprises a grid-shaped partition removably .mounted within thecasing;contactingthebottom thereof and substantially tangent to the path followed bythefree ends vof the flexible blades, whereby-a thickpargeting a casing provided with gripping means and into which pargeting material is stored and with-a-throwingrotor formed-with'flexibleblades which, during the-rotation of said rotor are in scraping engagement by their free-ends with. an abutment which curves them, the releasing .of the .fiex-ible blades when theyescapefrom said :abutmentcaus- .ing .a projection I of the pargeting .materialtpicked up .by

the ends .of .said flexible blades; the improvement which =.comprisesra separate vat adapted. to contain. thiclopargeting. material andopening in register with thetperipheryr of the rotor, a grid-shaped member extending across .-the opening of thetvat a movable'member carriedinsidersaid =vat, and means controlling.the'movement of "said movable member towards the. gridto urge thet-hick pargeting material .through' said grid-shaped member towards .the flexi- *ble blades of therotor for subsequentprojectionbysaid blades.

.3. .In .a pargeting machine utilizing semi-liquid "and viscous Ipargeting material and of .thetype comprising :a casing provided 'with gripping -means and into which pargeting material is stored and with :athrowingzrotor formed with flexible blades --which, during the-rotation '-of :said rotor -are in scraping engagement by :their free ends with an abutment which curves .them,: thez'releasing of=-thc flexible blades when they escape-.from saidi-abutment. causing-a projection of the pargeting matelialpicked up bythe ends: of said-flexible bladesyutherimprovement which comprises :an :auxiliary vat. adapted to: containzthick gpargetingmaterial, rcmovably fitted inside the casing-ion the: outsideof the 'path.:of .thesrotor blades 'LZIldlPLOVidEd :with van opening facing .the :latter, 1a.. grid :extend'mg .over

the-opening .of the vat innawdirection ttangentiali with reference to the ;path of .?said :rotor bla desnta movable member carried inside said vat, and means controlling the movement of said movable member towards the grid to urge the thick pargeting material through said grid towards the blades of the rotor for subsequent projection by said blades. I

4. In a pargeting machine utilizing: semi-liquid and viscous pargeting material and of the type comprising a casing provided-with gripping means and into which pargeting material is stored and with a throwing rotor formed with flexible blades which, during the rotation of said rotor are in scraping engagement by their free ends with an abutment which curves them, the releasing of the flexible blades when they escape from said abutment of said movable member towards the grid to urge the thick pargeting material through said grid towards the blades of the rotor for subsequent projection by said blades.

5. In a pargeting machine utilizing semi-liquid and viscous pargeting material and of the type comprising a casing provided with gripping means and into which pargeting material is stored and with a throwing rotor formed with flexible blades which, during the rotation of said rotor are in scraping engagement by their free ends with an abutment which curves them, the releasing of the flexible blades when'they escape from said abutment causing a projection of the pargeting material picked up by the ends of said flexible blades; the improvement which comprises an auxiliary vat adapted to contain thick pargeting material, removably fitted inside the casing on the outside of the path of the rotorblades and opening in register with the periphery of the rotor, a gridextending across the opening-of the vat, a spindle carried by the vat parallel with the axis of rotation of the rotor and located on the outside of the latter, a flap revolubly carried by said spindle and engaging the inside of the vat in register with the grid, a rod pivotally secured to said flap to control the movements of the latter towards the grid to urge the thick pargeting material through the opening in the vat towards the blades of the rotor for subsequent projection by said blades, and a hand-operable member at the free end of r the control rod located in the vicinity of the gripping casing provided with gripping means and into which the outside of the path of the rotor blades and opening in register with the periphery of the rotor, a grid extending across the opening of the vat, the meshes of which grid are close enough to prevent the thick pargeting material contained in said vat from entering under the sole action of gravity the fraction or said casing containing the rotor, a movable member carried inside the vat, and means controlling the movement of said movable member towards the grid to urge the thick pargeting material through said grid towards the blades of the rotor for subsequent projection by said blades.

7. In a pargeting machine utilizing semi-liquid and viscous pargeting material and of the type comprising ac'asing provided with gripping means and into which pargeting material is stored and with a throwing rotor formed with flexible blades which, during the rotation of 'saidrotor are in scraping engagement by their free ends with an abutment which curves them, the releasing of the flexible blades when they escape from said abutm'en't causing a projection of the pargeting material picked up by the ends of said flexible blades; the improvement which comprises an auxiliary vat adapted to contain thick pargeting material, removably titted inside the casin'g' on' the outside of the path of the rotor blades and opening in register with the periphery of the rotor, a removable interchangeable grid extending across the opening of the vat, a movable member carried inside said vat, and means controlling the movement of said movable 'member towards the grid to urge the thick pargeting material through said grid towards the blades of the rotor for subsequent projection by said blades.

8. In a pargeting machine utilizing semi-liquid and viscous pargeting material and of the type comprising a casing provided vw'th gripping means and into which pargeting material is stored and with a throwing rotor formed with flexible blades which, during the rotation of said rotor are in scraping engagement by their free ends with an abutment which curves them, the releasing of the flexible bladeswhen they escape from said abutment causing a projection of the pargeting material picked up by the ends of said flexible blades; the improvement which comprises an auxiliary vat adapted to contain the thick pargeting material, removably fitted inside the casing on the outside of the path of the rotor blades and provided with an opening facing the latter, means rigidly carried by said vat and adapted to be removably hooked onto the casing, a grid extending over the opening of the vat in a direction tangential with reference to the path of said rotor blades, a movable member carried inside said vat, and means controlling the movement of said movable member towards the grid to urge the thick pargeting material through said grid towards the blades of the rotor for subsequent projection by said blades.

9. In a pargeting machine utilizing semi-liquid and viscous pargeting material and of the type comprising a casing provided with gripping means and into which pargeting material is stored and with a throwing rotor formed with flexible blades which, during the rotation of said rotor are in scraping engagement by their free ends with an abutment which curves them, the releasing of the flexible blades when they escape from said abutment causing a projection of the pargeting material picked up by the ends of said flexible blades; the improvement which comprises an auxiliary vat adapted to contain thick pargeting, material, removably fitted inside the casing on the outside of the path of the rotor blades and provided with an opening facing the latter, a grid extending over the opening of the vat in a direction tangential with reference to the, path of said rotor blades, a movable member carried inside said vat, means controlling the movement of said movable member towards the grid to urge the thick pargeting material through said grid towards the blades of the rotor for subsequent projection by said blades, a frame carrying the grid, the movable member and the means controlling the latter, said frame resting on the bottom of the casing and carried inside the latter on the outside of the rotor, and means for detachably securing the frame and the controlling means to the casing.

10. In a pargeting machine utilizing semi-liquid and I viscous pargeting material and of the type comprising a casing provided with gripping means and into which pargeting material is stored and with a throwing rotor formed with flexible blades which, during the rotation 'of said rotor are in scraping engagement by their free 17 two wopenings .-in=its cylindrical wall, oneiof V which acts as lpargetingrqpenin g, .-an-,.auxiliary vat removably seeure'd to Film -.outside of the cylindrical *wall of the-Leasing in register 'with' ihe second opening therein landcadapted '10 contain thick .pargeting material, -.a grid .covering vsaid second zopening, .a movable member-carried :inside said vat, :means controlling -the movement -of :said {movable member vlowards the grid to urge the thik par geting material .through the rsecond opening-towards the Blades ofthe rotor for subsequent uprojectionwthrough .the;first 'openin'g of said casing,-and-a wallzadgpted-to removably I 1 References 'Cited in the 'filero'f this patent UNITED STATES PATENTS "Dia-gn-as '-'Jan. 29, 1952 FOREIGN BATENTS Italy Nov. 3, .1937 France -1 Sept. 3, J92] 

